Planetary gear transmission systems or components – Variable speed or direction transmission combined with...
Patent
1989-03-03
1991-06-25
Herrmann, Allan D.
Planetary gear transmission systems or components
Variable speed or direction transmission combined with...
180249, F16H 144
Patent
active
050263358
ABSTRACT:
The differential lock switch for a work vehicle is used to trigger a control system for downshifting the vehicle from second to first. The control system comprises five relays. The first three relays detect if the vehicle is in second; if the vehicle is going forward; and if the differential lock switch is actuated. The fourth relay is used to latch the signal from the third relay so that the differential lock switch can be released and the vehicle will remain in first. The fifth relay receives signals from the first four relays and manipulates the correct solenoid valves for downshifting the vehicle.
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Bourgeous Clarence G.
Miyaji Masayoshi
Morita Haruyuki
Oftedal Teryl M.
Deere & Company
Herrmann Allan D.
Massey Ryan W.
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